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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
600 yd rifle for Elk & Deer
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<blockquote data-quote="Michael Courtney" data-source="post: 944065" data-attributes="member: 28191"><p>Before tweaking the rifle, you need to do some work to evaluate its accuracy and velocity potential. A lot of ADLs have 22-24" barrels and generous chambers which often fail to produce expected velocities, like several hundred fps lower. Combined with lower than advertized BCs due to bullet manufacturer exaggerations and larger than ideal pitch and yaw from a thin barrel, and your trajectories and retained energy can be much, much worse than ballistics charts suggest.</p><p></p><p>Getting the needed accuracy and velocity usually means reloading, picking a good bullet and a temperature insensitive powder, and chronographing so you know your velocity. 600 yard hunting means you'll need MOA accuracy from 5 shot groups. I's start with the bullet and load, because that's what's actually gonna fly for 600 yards and kill the critter. I think the 162 grain AMAX and H1000 are a good place to start. The BC is really as high as advertised, and you're likely to get close to the rifle's accuracy potential without too much fiddling.</p><p></p><p>But before I even try developing a load with an ADL of unknown history, it would be helpful to know it's accuracy potential demonstrated so far. What group sizes have you measured, at what ranges, with what loads? If you haven't bothered to measure some group sizes, you need to do that first before you start spending money on a rifle with little potential.</p></blockquote><p></p>
[QUOTE="Michael Courtney, post: 944065, member: 28191"] Before tweaking the rifle, you need to do some work to evaluate its accuracy and velocity potential. A lot of ADLs have 22-24" barrels and generous chambers which often fail to produce expected velocities, like several hundred fps lower. Combined with lower than advertized BCs due to bullet manufacturer exaggerations and larger than ideal pitch and yaw from a thin barrel, and your trajectories and retained energy can be much, much worse than ballistics charts suggest. Getting the needed accuracy and velocity usually means reloading, picking a good bullet and a temperature insensitive powder, and chronographing so you know your velocity. 600 yard hunting means you'll need MOA accuracy from 5 shot groups. I's start with the bullet and load, because that's what's actually gonna fly for 600 yards and kill the critter. I think the 162 grain AMAX and H1000 are a good place to start. The BC is really as high as advertised, and you're likely to get close to the rifle's accuracy potential without too much fiddling. But before I even try developing a load with an ADL of unknown history, it would be helpful to know it's accuracy potential demonstrated so far. What group sizes have you measured, at what ranges, with what loads? If you haven't bothered to measure some group sizes, you need to do that first before you start spending money on a rifle with little potential. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
600 yd rifle for Elk & Deer
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